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What causes thyroid cysts?

Dr. Jeanne Morrison, PhD
Family Practitioner

Nobody knows for sure what causes thyroid cysts or thyroid nodules (lumps) in general. Some experts think that people who do not get enough iodine in their diets might be more susceptible to thyroid nodules. Also, people with a condition known as Hashimoto's disease, which is characterized by inflammation and underactivity of the thyroid gland; people with a genetic defect; and people with a history of radiation to the head or neck might be at increased risk for thyroid nodules.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.